No problem, we've got 4045 and 8504 to multiply
4045 × 8504 = 8504 × (4045)
+ 8504 × 5 what gives us 42520
+ 8504 × 40 that is equal 340160
+ 8504 × 000 yielding 0
+ 8504 × 4000 that is equal 34016000

= 34398680
